Duplex clutch.



J. STULL. DUPLEX CLUTCH.

APPLICATION FILED JAN. 29, 1913.

Patented Sept. 22, 1914.

2 SHEETS-SHBET l.

2 Ara WITNESSES.

A TTOR/VEY J. H. STULL.

DUPLEX CLUTCH.

APPLICATION FILED JANLZQ, 191s.

Patented Sept. 22, 1914.

2 SHEETSSHEET 2.

WITNESSES:

ATTORNEY HIE NOIRIS PETERS 60., PRO -urno As! (2mm. 1:.

w s awaited; St t s i'el id a Frie- "lmont; inthe'eoiinty of Saridiiskyand States {of Ohio, hayte lilii ejnted certain new and iise a ,ful,Improvements" in" 'Dl'iplex; Cli t'ehes, fof a; w i h h f lsw n iisspaifi awn-e The priiicipa y es ii i wv f r me or al H ing of loosephlleyssiich, thattvhileequally as efi f cm he p ow fls Imn se.nevertheless 'is' constrii'ete'd with fewer. parts and therefore moreeconomical"; and further such,, that by" the addition of additional:

y 'giveiijto the jcli tch, so as' 'to' meet ia ily fim v f crease ofrequirements "all being "operated j from a s11 glesh1ft1-I'1gleVer;"Because of my "'elutoh being easily; adapted to meet}; siieh:ginereasedrequirements {I call it' a duplex el1itch;"theiadded'elutehpare fo min w at seilt the same "are made part hereof a Figure 1represents at i e-yaw of iiiven-' "YFigQQ represents aCrossfsectioiiofFig. 1 on aling-AVA, sli

' iliary dutch}; Figs r so I sents i I LeleVatioh'a View of thesleeve,with alliof its harried parts being removed there:

tion of 1mg:- 1 n 11 1s B;"Fig.4 reprei I from; Fig. 5 repres' ents afragmentary trans-1 verse section {of Fig.1, the froiitl alf'heing i 0 ai ing represented as Closed; Fig. 8 represents a transverse section ofFig.- 7,{along the line;

and a modifiedpulleyfsubstituted forfthe pulleyshownin Figs l and 6d,the jeluteh bet ni myjinvn all the p rts f. m f1 eup n ga sleeYe'-2which is i turn rigidly SQ:

by means]; Qf' set; serw 4 oi'fother suitablemeans, @Opelend ofjsadfsleeyefls threaded sni ch-m an im ed) c pa w ay b he facefot the aux-r/presents aeross sec- Specificaitieni 0i? Lettei'S PaIteiitL ioppositelyloieated clutch members 7. Said members are normally made to'engage cor Trespoii'dingreeesses 7 in the end of the hub said disk totur lwith the operation of said shaft. The'eonipaiiion disk 10 as wellasithe pulley 1l, 'a1 1do1ie disk 1210f the auxiliary clutch is"normally .ljd'ose upon said sleeve;

Whilethe disk 13 companion to said disk 12,

' after i the parts havebeen suitably adjusted, h s-secured to saidsleeve and made to turn therewith by means of a lset-jserew 14, or

fotherj suitable" meanslfPreferably I con- "struct said sleeve with aslot l5,"through fyvhieh I pass saidscrew sothat'itlinay havefirm'bearir g direct up on theshaft. Said pulley 1-1, normally looseupon said sleeve as stated, is eor nected upon fone sideiwith the 1 disk10,' and oppdsitely with the disk 12, by

. Iiieans of the jaw cl i tcjhes' 16 so that while are abrmauy loose,made to turn as one piee whenever-theldisks' .9 and 10 be eonieengaged.It may riowbe understood that the normal position; of the respectiveclutches in my" duplex el iteh is, open; and their respeetive c m aaiendisks are held .apart bysuitable' resilient means, Which in thepresentcase are substantially identical springs, ,l ,7 Whenjsaid clutchis open,said springs being free to operate, said annular "shoulder is ,made toengagetheen'd of said hub"8,-assefer1 inFigfil. Folthe pl rposeofelbsing said elu tch I provide suitablecaln @Pwv e b a 19 Whieh p" j ecto 1tWard;Erjom the outer 'fae of theicliiteh disk 9;; onee'iid of said'let erheihg'fiilbrumedagainst said shoulder, I an dthe flopposite'end,provided withsaid cam, 1 18 being macl ef to coiipera-te with the face aof said jeonj e the b'end in Said leverdbeing s0 1o t;e 1- that whensaid'leter is operated the po iiit 'of thebendwill be. lifted againstthe ifae'efofone of, said lugslf Said, cone "is pro- "hided' withanaanuiar groove 20, f0r colevers IS ahdiprOjecting lugs oiaeratioriwith a shifting yoke. The same j bjeilig inflalljresgeets $11 011 ashom'monly j use d'for that purpos'e,"it is thought no fur- "theirdescription or "illustration is 3 required.

Inj-orderithat saidbentlever may perform proper fimetioniwithin aminimum of ifcompass, it may tbeniiotieed tliat I rest the fu'lerum endthereof upon the outer perf'imeter of said sleeve; and therefore, to-.ac- V cominodate that end of said lever I provide. said hub 8 witha'slot 21,-seeFigs." 3 and 5.- In Fig. 5 a part of the shoulder 6 isbroken away at 21 to show said slotmore clearly.

' It has already been stated that-the disk 9 is made tooperate by therotationi of the shaft 3; and therefore ,in order thatsaid.

lever may not fall behind, and thus" rendered inoperative, .it isobvious that suitable means shouldbe provided so that said lever; may becarried'around with said disk. Preferabl'e, if not from necessity,j'Imake said slot to contribute toward performing that additional function.In addition thereto, and in order that said lever maynot be lost byreason of centrifugal force, I provide.

' said lugfli) with a suitable finger 22, which .I'Ilocate in suitableproximity thereto, and whlch'serves asa keeper for s a1d; le. er Andfurther so-that said' levers maynotbe/lost,

"Iqmake the length and depth-capacityof saidclutch members, 7 and 7, toexceed any cant.

permissible lateral movement of said disk9 whereby the same, whilefreeto slide, is at all times-made to turn with the operation of.

said shaft, and in consequence said keepers 22 are made to perform theirappointed duty. Said slot'fmay be understood from Fig. 1, when seen inconnection with Fig; 3;

' butit ism ore clearly shown in Fig 5 where it 1s occupied by theextreme end of o the shorter'arm of said.l ever, as shown in dottedoutline. Opp'ositelyfsaid slot isshown Va- 1301 frictional purposes itmay now be ex-j plalned, that oneofthe disks, in each of the respectiveclutches, major and auxiliary, is

faced'with a'suitable material 28 which for conveniencefl cut insegments, and which I secure to said disks by suitable means, as by aflat headed rivet or pin 24, see Fig. 2. It has alreadybeen stated thatthe companion disks in" each of the respective clutches, major andauxiliary, are held apart by a substantially identical spring 17. ,In

Fig. 2 said spring is seen out cross section .of the shaft 3. The-mechan1o will understand that said spring m'ust'be' seated in asuitable recess out in saiddisks; and in the i 50 drawings, though thesame is not 'sho-wn',-itl will be understood that said recess isfoccupled' by said springs In my duplex clutch, t has already been[stated that thedisk '13, s secured upon thesl'eeve 2, and made to turntherewith by means, of'the set screwsale and when the position of saiddisk is ad I usted by means of the adjusting nut '5, no

i furtheror other fastening isrequired. But

in case of; my' modified clutch, as shown Fig. 7-, in orderhthat saidnut may not be moved by frictional contact with the hub 25,

provide said nut; with a reduced extension 27, winch I secure to theshaft 3 by means ofa set screw 28, as shown more clearly in 8'. -v '7 7The jaw clutches bif'man's" o twhich the pulley 1 l is connected withthe dlsks 10 and 12, may be more clearly understoodby wreferring toFigs. 1, 6, and 7 the clutch members 29 and 30 being made-t0 engagesubstantially identical recesses 31? 7 It is a matter ,-of,commonclutches frequently have to be installed where it would Ibeinoonvenientto dismantle the shaft and therefore itoflaccomnmdate knowledge thatsuch uses"sp1it clutch be provided. a

In the drawings Fig. 9 represents ,a clutch. In thiscase thes1eeve2andthejdisk ;9 arepsupposedito becutlupon' thetdotted lines and thenrespectively,secured together by plates32 and 33,,whijchlare cut uponthe a :ifull; lines; thejse em partsl'thentbeingsuit- .ably securedtogether, each 7 in their proper r place. 7 by 1 screws Sim larly aseany mechanic would suggest, 'eachlof the remaining. parts of saidclutchinay-besplit mounted as required.

Referring to the sleeve- 2 1t may'nojwgbe observed that inthefdrawings-I haqe h j the same as ifI-the sleeve; proper, "and theannular shoulder 6 v tkigetlier with the clutch .cmemberi', wereintegral with each as v if molded or-jformed in a single piece. In Pr tt is y aibut f'prefe I said shoulder and clutchmember mayjbe of aseparate construction and the same made to be carried by said sleeveasany mechanic wouldsuggestg From preference however, I,

construct them as shown in the drawing, be- ,ing in consequence] thereofablef to use a lighter material,for thej' sleeve. In connec- :tio'nherewith, since Ijhave indifierently called the part 6 both a fshoulder, and an annular shoulderf, it 1 m, w be e plained, that order,to, render-the 10pm- "tion of said lever 18 effective, a shoulder,only, is required, But in order that Ifm'ay be permitted to use suchlighter mariarr reinforce the same by maki'ng said part? 6 the clutch116,, between; the;

big independent of eachiother, astoaii'ord,v I

means bywhijchsaidj'pulleymay befdr'iven when said disks'9 and mammau toclutch;

and the furtherpurpose thereof is"to, give to said jpulleyapowerwhichmay be'wholly iny com mensura'tev with its dianietenlor [the ex-[of ;.its, friction surface, and thereby, .w t e's me me i e. "po e g'veie th i a a higher lowjbelt 'veloci y, using,:either'f1arg'e orsmallpulleysasmay beidesired.

aiv nginow ,wl atiIclaiinlas' new sgl 1; A duplex clutchtomprisipg-afanopf 1,111,681 i I 3 i" crating shaft; a sleeve mountedthereon and made to turn therewith; an annular shoulder for said sleeveat one endpandya screw threadedadjusting nut" for the other end; a

friction clutch disk slidable upon said sleeve, with slotted hubtherefor,v and jaw clutch connections between the saineand said-shoulderwhich causesaid "to turn assaid sleeve is made to operate; asecondfriction clutch disk contiguous etoqsaidfnut with se.- curing meanstherefor-whereby thesame may be fixed upon said sleeve when in suitableposition; substantially identical springs, .one

f for each such disk mounted upon said: sleeve;

additional clutch disks; one companion for each of the previouslymentioned disks, and a" driving pulley, all loose upon said sleeve,together with jaw clutch connections upon each side of said pulley andbetween the same'andits adjacent disk, whereby all said parts are'locked together and made to .turn

t as a ng fp efloySuitablelugs, which'are I oppositely mounted p uter peils-t V1 eter of said hub; a, shiftable cone mounted upon said shaft,and a cam provided bent lever, one for each such lug,the shorter arm ofwhichoperatesin said slot and is made to fulcrum" against said shoulder,while the eam of the otherarmycooperates With said lug,* whereby as saidconeis operated, said cone to lift against the outer face of said:"csprnigs'. are compressed and both said "clutches are closed, togetherwith suitable :ke'epers for each such lever which guard inxcombination,and substantially as set against the; action ofcentrifugalforce; all

" ora.-

I v .2."jIn"'a,device oflthe character described, a the combination ofshaft; a sleeve-fixed thereupon, one endfof which is provided a with ashoulder atjtwo diametrically jopfposite points, and avscrew threadedadjust- ,in'g nut for the opposite end thereof, to-

gether with means forholding said nut in place; a hubbed friction disk,slidably con-.

nected with said sleeve, the hub of which,

at two diametrically opposite points, is provided with a slot,.and acot'iperating retaining lug; a shiftable cone, loose upon saidshaft; apair-of cam provided bent levers, one for each suchlslot and lug, forthe operation of said disk; said slots being made toreceive one end ofsaid lever, and said levers being so formed, that while said end isfulcrumed againstsaid shoulder, theopposite end thereof is made tooperate by engagement of f said cam withthe face of "said cone, the

point ofthe bend being made to lift against the face of its retaininglug; a second disk for cooperation with said first named disk, and apulley adjacent to said nut, both loose upon said sleeve, together, withengaging means between. said second disk andlsaid pulley, for theoperation thereof. I

3. In a construction of the sort described the combination of ashaft,fasleeve fixed thereon, one end of which is provided with ashoulder at two diametrically opposite points; a shiftable cone looseupon said shaft; a hubbed friction disk slidably connected to saidsleeve, and a pair of bent levers for the operation thereof; said hubbeing oppositely provided i with retaining lugs, and slots, one such lugandslot for each such lever; said slotsbein made to receive one end ofsaid lever, an so formed, that while said end is fulcrumed against saidshoulder, the opposite end i said lever being I thereofis made tooperateby engagement with the face of said cone, and said lever, at

the po-int of thebend,is'made to engage and lift against the face ofsaid retaining lug,

slots, one such lug and slot for each such lever; said slots being madeto receive one end of said lever, and said lever being so formed, thatwhile said end is fulcrumed against said shoulder, the opposite endthereof is made to operate by engagement of said cam with the face ofsaid cone, said lever at the point of thebend, being madeto engage andlift against the face of said retaining lug; all substantially asset'forth.

In testimony whereof I afiix my signature in presence of two witnesses.

JACOB H. STULL. WVitnesses:

FRANK J. TUTTLE,

C. B. CARR.

' Gopiesof this patent maybe obtained for five cents each, by addressingthe Commissioner of I'atents,

i a Washington, D. O. a l

